Shikaku


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Shikaku (also known as Rectangles) is a logic puzzle with simple rules and challenging solutions.

The rules are simple. You have to divide the grid into rectangular and square pieces such that each piece contains exactly one number, and that number represents the area of the rectangle.

Click and drag to draw a rectangle. To remove lines use the right mouse button or hold the Ctrl or the Shift key.

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Shikaku


5x5 Shikaku | 7x7 Shikaku | 10x10 Shikaku | 15x15 Shikaku | 20x20 Shikaku | 25x25 Shikaku

This Month
1. Vicellen
15
 00:05.40
2. oli g
8
 00:07.01
3. PuzzleMaestro
90
 00:07.49
4. UwUwhaduido
22
 00:07.60
5. KaneCarter
19
 00:07.95
6. qobi
234
 00:08.07
7. gh
62
 00:08.22
8. sh3llb33 00:08.28
9. apilki08 00:08.57
10. MushroomsCavern
56
 00:08.99
11. Aditzu 00:09.17
12. GeorgPfleger
95
 00:09.18
13. SophieK
54
 00:09.21
14. rhyde27
15
 00:09.28
15. Paweł Noras
8
 00:09.44
16. Calvin Anderson
5
 00:09.58
17. iulik 00:09.82
18. Emzed
64
 00:09.93
19. 白切叉燒鵝
65
 00:10.15
20. Ghoul 00:10.29
This Week
1. Vicellen
15
 00:05.40
2. oli g
8
 00:07.01
3. KaneCarter
19
 00:07.95
4. gh
62
 00:08.22
5. GeorgPfleger
95
 00:09.18
6. SophieK
54
 00:09.21
7. apilki08 00:09.71
8. Emzed
64
 00:09.93
9. qobi
234
 00:09.95
10. BingaBonga
10
 00:10.42
11. AlistairMacAllister
68
 00:10.43
12. nyahr 00:10.62
13. siodmy
12
 00:10.67
14. underoath18v 00:11.29
15. LetsGoFlyers
13
 00:12.57
16. EmilMacko
1
 00:13.44
17. kroller
19
 00:15.85
18. ZIG656 00:17.05
19. LaserEmoj1 00:17.24
20. shhhhmbiote 00:17.75
Today
1. GeorgPfleger
95
 00:09.18
2. Emzed
64
 00:09.93
3. BingaBonga
10
 00:10.42
4. oli g
8
 00:10.87
5. apilki08 00:12.96
6. shhhhmbiote 00:17.75
7. BrunoValads
7
 00:21.03
8. IcaTheDuck 00:21.66
9. KGabee 00:22.23
10. saraaane 00:23.39
11. 54188888888 00:29.82
12. JerryG 00:48.67
13. Lmw122020 00:49.58
14. mxxp
1
 00:54.52
15.--- empty -----:--
16.--- empty -----:--
17.--- empty -----:--
18.--- empty -----:--
19.--- empty -----:--
20.--- empty -----:--
MO3
1. zahhydude1
211
 00:03.48
2. vowels
216
 00:03.81
3. demian2
61
 00:04.66
4. Vicellen
15
 00:04.70
5. numbrr
309
 00:04.92
6. coolcoolguy65
169
 00:05.06
7. BingBongBob
108
 00:05.15
8. JZE
87
 00:05.16
9. nabi
92
 00:05.27
10. mtanzer
140
 00:05.34
AO5
1. zahhydude1
211
 00:03.76
2. vowels
216
 00:03.88
3. demian2
61
 00:04.92
4. Vicellen
15
 00:05.06
5. numbrr
309
 00:05.32
6. BingBongBob
108
 00:05.39
7. nabi
92
 00:05.41
8. bearn
206
 00:05.55
9. JZE
87
 00:05.75
10. coolcoolguy65
169
 00:06.01
AO12
1. zahhydude1
211
 00:04.20
2. vowels
216
 00:04.91
3. BingBongBob
108
 00:05.84
4. Vicellen
15
 00:06.24
5. numbrr
309
 00:06.26
6. demian2
61
 00:06.31
7. JZE
87
 00:06.39
8. bearn
206
 00:06.41
9. coolcoolguy65
169
 00:06.66
10. nabi
92
 00:06.91
Robots / programmatic solversinfo  
1.tlstyer
141
00:00.006
2.Charlie Li
61
00:00.207
3.Paul Bismuth
1
00:01.692

* MO3 - Mean of 3. The average of 3 consecutive times.
AO5 - Average of 5. The average of 5 consecutive times ignoring the highest and the lowest.
AO12 - Average of 12. The average of 12 consecutive times ignoring the highest and the lowest.
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2026-03-06 23:09:17

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